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R. E. FARMER. CQFFEE REncoL'RToR. APPLICATION FILED JUNE 3,1922.

RDY E. FARMER.

INVENTOR.

BY( \l L ATTORNER Reissue'd Oct. 31, 1922.

UNITED STATES Re."l5,480

PATENT OFFICE.

ROY FARMER, OF LOS ANGELES, CALIFORNIA.

COFFEE lPrincoLn'ron.

Original No. 1,389,298', dated August 30, 1921, SerialiNo. 457,335, led March 31, 1921. Application for reissue led June 3, 1922. Serial No. 565,735.

To all 'whomz't may concern.'

Be it known that I, ROY E. FARMER, a citizen of the United States, residing at Los Angeles, county of Los Angeles, State of California, have invented new and useful Improvements in Coffee Percolators, for which Letters Patent No. 1,389,298 have been granted` to me August 30, 1921, and which are hereby surrendered, the following being a specification of said invention.

.This inventionis a percolator for coffee and the like which is so constructedas to provide a circulation through the percolator by a suitable-pump.

Further objects of the invention will be readily understood from the following description of the accompanyingdrawings, in whichi Figure 1 is a front elevation of a percolator constructed in accordance with the invention.

Figure 2 is alongitudinal section on the line 2-2 of Fig. 1.

Figure 3 is a transverse section on the line 3-3 of Fig. 2.

' Figure 4 is a perspective view showing 'one v of the valvular controlling means' for the percolator. y

The percolator may include the usual outer chamber 1 adapted to contain water and having a suitable burner 2l beneath the same. -The burner may be controlled by a usual valve`3 arranged in the fuel pipe f1 leading to the burner. An inner chamber 5 is received within chamber 1 in spaced relation from the walls thereof, and said chambers communicate at their upper portions as shown at 6, so that a water level will be maintained in b othof said chambers.

A usual colfee receptacle 7, whichv may be l respectively,l adjacent the T 17, and said a stone jar, is suspendedfwithin chamber 5 as by a usual supporting means 8 depending from outer chamber 1. The coffee receptacle is arranged to receive a usual Abag of coffeeA as shown at 9.

.The circulating system for the percolator includes a discharge pipe 10 depending from receptacle 7 and extending to the bottom of chamber 5. This pipe has one branch thereof extending outside of chamber 1 andto the front of the percolator as shown at 11, and another `branch 12 extending outsideA of chamberv 1 and at one side of the percolator. A casing 14 is arranged upon the percolator over the projecting end of pipe cause circulation through pipe 18,

12, and a suitable pump 15 is arranged within this casing with a suitable electric motor 16 also provided within the casing for operating .the pump. The pump 1s provided with an,` inlet T 17 having one branch thereof connected to pipe 12 and the other branch connected to a pipe 18 extending into water chamber 1. The discharge pipe 19 for the. pump is connected to pipe 11, and a check valve 20 opening in the direction of the outer end of pipe 11, is arranged in the latter between the connection of the same with discharge pipe 19 and the pipe 10.

Pipe 11 communicates with a sight gage 22 upon the exterior'of the percolator, and aj usual faucet 23 for withdrawing coffee is arranged at the base of this sight gage. The upper end of this sight gage is connected to a pipe 24 extending withinvouter chamber 1. This pipe has a pipe 25 swiveled to the same as shown at 26, so that the end of the. pipe may be swungup or down, and said pipe end is arranged as a usual spray ozzle 27 adapted to depend within coffee ag 9. v I,

A second sight gage '30 is preferably arranged upon the'exterior of the percolator Ylovver'end of the sight gage. The desired water level within the percolator may ,be4

maintained througha suitable'supply pipe 34 preferably communicating lWith the lower portion' of chamber .1 and provided with a 'suitable cut-off valvel 35.

Valves 37 are provided in pipes 12 and 18 valves are openedl and closed by operating handles 38 which preferabl'b7 'carry electrical contact makers 39 larranged to engage contacts 40 'when the valves are opened. The circuits through contacts 39--40 form part of the fcircuit through .motor 16 so as to cause actuation of the motor and operation of the pump whenever eitherV valve 37 is opened;

In operation water having been placed in chambers 1 and 5 to a desired level, the

valve for pipe 12 is closed and the valve for pipe 18 is opened. The pump will then the pump, Pipe ,19, Pipe 11, Sight gage 22 and the coii'ee receptacle, and thence through pipe l and past the check valve 20 so as to complete the circulation of the water. The amount of water thus supplied to the coffee receptacle may be measured b the graduations upon sight gage 30 which will `show Vao a corresponding decrease in the water level within the outer chamber of the ercolator. When suiicient Water has been introduced into the percolator system, the valve in pipe 18 is closed and the valve in pipe 12 is opened. As a result no more water W-ill enter the percolating system, but the water in said system will be circulated through the coffee by the pump. This circulation of the water for percolating the coffee is by way of pipe 12, pump l5, pipe 19, pipe l1, sight gage 22, .pipe 25, and thence through the coffee and the coffee receptacle `back to pipe 10. It will also be noted that the circulation of the'percolated coffee through sight gage 22 permits of visibly noting the condition of the coffee in .order that it may be made-of the required strength. l

It will further be noted that the construction of the percolator, as above set forth, provides for .withdrawing hot water from outer chamber l through faucet 32 as it is needed, while maintaining a volume of hot Water within chamber 5 and surrounding the coffee receptacle.

Various changes may be made without departing from the spirit of the invention as claimed.

What vis claimed is;

l. A percolator includingY an inner receptacle, a circulating system thro-ugh said receptacle, means for pumping fluid through said circulating system, a' motor for operating said pumping means, a closure valve in said circulating system, and controlling means for said motor and valve dependently operated.

'2. A percolator comprisingan inner receptacle, ran outer chamber, `a circulating system through said inner receptacle, said circulating system having an extension through said outer chamber, and independent valvular means in said circulating system and in said extension. i

3. A percolator comprising an inner receptacle, an outer chamber, a circulating system through said inner receptacle, said circulating system 'having an extension through said outer chamber, a pump coope'rating with Vsaid circulating system and with the extension thereof, means for operating said pump, and valvular means in said circulating system and in said eXtension, and each controlling the operating means for said pump.

4. A percolator comprising an inner receptacle, an `outer chamber, a discharge conduit leading from the base of said receptacle, a pump, inlets thereto from said receptacle and Afrom said outer chamber, and a discharge from said pump to said discharge conduit, said conduit leading back to the top of said receptacle.

. 5. A percolator comprising an innerreceptacle, an outer chamber, a vdischarge conduit leading from the base of said receptacle, a pump, inlets thereto from said receptacle and from said outer chamber, a discharge from said pump to said discharge conduit, said conduit leading back to the top of said receptacle, valvular contrOlling means in said pump inlets, and a -`check valve in said discharge conduit between `the inner receptacle and said pump discharge.

6. A percolator including an inner receptacle, an intermediate chamber surrounding the same, an outer chamber, a circulating system through said receptacle, said chambers communicating at their` upper ends, and a fluid discharge and a fluid inlet .for said outer chamber.

7. A percolator including a percolating receptacle having an oftake for percolated fluid, a liquid chamber separate from said offtake, a conduit leading from said chamber to said receptacle, and a pump in said Conduit.

8. Alpercolator including a ypercolating receptacle having an oii'take for percolated Huid, a liquid chamber separate from said oii'take, a conduit leading from said `chamber to said receptacle, valvular means in said conduit, and a pump in said conduit.

9.. A percolator including a percolating receptacle having an oii'take for percolated fluid, a liquid chamber, a conduit leading -from said chamber to said receptacle, said Voff-take leading to said conduit, a discharge vfaucet extending from said conduit, and a pump in said conduit.

4 l0. A percolator including a percolating receptacle having an .offtake for percolated fluid, a liquid chamber, a `conduit leading from said chamber to said receptacle, said oiitake -leading to said conduit, and valvular means in said voit'take between said receptacle and said conduit` 11. Ar percolator including a receptacle, a liquid chamber, a circulating system .through said receptacle having a pump in said system, and a conduit leading from said chamber to said circulating system.

l2. A percolator including a receptacle, a liquid chamber, a circulating system through said receptacle having a Apump in said system, a conduit leading from said chamber to said circulating system, -and valvular means in said conduit. e

In testimony vwhereof I yhave signed my name to this specification.

ROY E. FARMER; 

